# SDR CA051017013

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 16, 2005
- Submitted: December 2, 2005
- Operation: General aviation
- Make and model: Snias AS332L
- Aircraft time: 14,977 hours
- Engine: Tmeca MAKILA1A
- System (JASC): [6310 · Engine/Transmission Coupling](https://openairdocs.org/jasc/6310)
- Part: Coupling
- Part number: 19E2268A
- Part serial: 2640
- Condition: Damaged
- Location: Eng/Rotor
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CA051017013

## Discrepancy

AFTER LAST FLIGHT OF THE DAY, ENGINEERING REVIEWED THE HUMS DATA AND NOTICED A SPIKE IN THE SHAFT INFORMATION.  THE A/C ENGINE WAS REMOVED THE SHAFT REMOVED FROM THE ENGINE AND INSPECTED, AND A CRACK WAS DISCOVERED IN BETWEEN THE TWO FRANGIBLE DISCS.  ANOTHER SHAFT WAS INSTALLED AND ALL NECESSARY GROUND RUNS AND VIBRATION CHECK WERE CARRIED OUT SATISFACTORY.  A/C WAS RETURNED TO SERVICE.

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